145 
any doubt that the colouring matter called by Mae Munn chole- 
haematin and by Löbisch bilipurpurin, which, as has been shown, 
is identieal with phylloerythrine, appears in the bile of herbivora 
only on eondition that the animal is fed with fresh grass. The only 
conclusion which ean be drawn from this fact is that cholehae- 
matin, otherwise bilipurpurin or phylloerythrine is a derivative of 
chlorophyll and not a descendant of haemoglobin like the usual 
bile colouring matters, although, of course, in view of the proved 
close relationship of ehlorophyll and haemoglobin, phylloerythrine 
and the blood eolouring matter are by no means quite foreign to 
each other. However, I think, for the present, not being able to 
give the eonstitutional formula of cholehaematin, or for that matter 
of any coloured ehlorophyll or haemoglobin derivatives, it will be 
useful to drop misleading names like „cholehaematin and bilipur- 
purin“ and use only the third ,phylloerythrine“ which meets the 
existing facts best. 
My best thanks are due to prof. N. Cybulski, who was kind 
enough to fascilitate these researches by supplying me with a sheep 
provided with a biliary fistula 
Qt 
=] 
. MM. L. MARCHLEWSKI m. t. et LAD. MATEJKO. Studya nad biksyna. 
Czesé I. (Studies on bixin, the colouring matter of Bixa Orle- 
ana. I part). (Études sur la bixine. 1 partie), 
(Planche XIX.). 
Bixin has been already frequently the objeet of more or less ex- 
haustive researches. The most encouraging results were obtained by 
Ettit) and by Zwick 2), but despite the great amount of work spent 
upon the subjeet not much is known concerning the constitution of 
this interesting body. Our attention has been drawn to bixin through 
the following eireumstances: it possesses an absorption speetrum 
which is not unlike the speetrum of lipochroms to which we count 
also the yellow colouring matters acompanying chlorophyll in green 
leaves, and it yields with cone. sulphurie acid a blue colouration. 
Analogously behave the lipochromes. The study of the latter sub- 
!) Ber. XI p. 864. 
2) Über den Farbstoff des Orleans, Würzburg 1899. 
Bulletin III. 
ws 
